Dezh-e Dokhtar, or "The Maiden's Castle," Iran, built by Ardashir I in AD 209, before he was finally able to defeat the Parthian empire.

Qal'eh Dokhtar, Ghale Dokhtar , Dezh Dokhtar (Persian: دژ دختر‎, "The Maiden Castle"), is a castle made by Ardashir I, in present day Kerman, Iran, in 209 AD. It is located on a mountain slope near the Firouzabad-Kerman road.

The name of the castle implies it was dedicated to the Goddess Anahita, to whom the term "Maiden" refers. After capturing Isfahan and Kerman from the Parthians, Ardashir (re)built the city of Gur near the castle in Pirouzabad, making it his capital. After defeating Ardavan V ( Artabanus V ), the Parthian king in a great battle in 224 AD, he built the Palace of Ardashir nearby the Dezh Dokhtar structure. Ardashir's grandfather was a prominent priest of the Goddess Anahita at the nearby temple of Darabgird, "City of Darius."

The castle is built on a high bluff which overlooks the river and roadway running south from Fars. The entrance to the castle is through a tall gateway within a large, rectangular tower. Inside, a broad stairway leads up to a rectangular hall, with blind niches on either side and two large buttresses at the east end. These supported stairways go up to the next level, with another large rectangular room, 14 x 23 m, with an iwan at the east end and arched blind windows on either side.

It was presumably roofed by an arched vault. Beyond this there are steps to a third level and a large rectangular room with ¼ circle squinches at each corner supporting a domed roof. This was buttressed by very thick walls on all sides, presumably to ensure its stability, and the cupola could be reached by a spiral staircase on the south side.

The fortified palace contains many of the recurring features of Sasanian palace and civic architecture: long halls, arches, domes, recessed windows, and stairways. The construction is uniform of roughly shaped stone and mortar, but the surfaces were obviously all finished with a thick coating of plaster or stucco, giving a smooth and elegant appearance, which could have been decorated with ornamentation or painting.

The 1,800-year-old castle has lost some four meters of its original height over the last century and experts warn if urgent measures are not taken to enforce it, the castle may soon collapse.